crispy-css/example/components/_button.scss

/**
 *  components: header
 *
 *
 *  @author Björn Hase, Tentakelfabrik
 *  @license http://opensource.org/licenses/MIT The MIT License
 *  @link https://github.com/tentakelfabrik/crispy-css
 *
 */

@mixin component__button() {
    .button {
        &--transparent {
            padding: 0;
            margin: 0;
            border: 0;
            background: transparent;
        }
    }
}